/**
 * MIT License
 *
 * Copyright (c) 2025 Huawei Technologies Co., Ltd. All rights reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 * */
#ifndef UNIFIEDCACHE_TRANS_SIMU_STREAM_H
#define UNIFIEDCACHE_TRANS_SIMU_STREAM_H

#include <condition_variable>
#include <functional>
#include <list>
#include <mutex>
#include <thread>
#include "trans/stream.h"

namespace UC::Trans {

class SimuStream : public Stream {
    std::thread thread_;
    std::list<std::function<void()>> tasks_;
    std::mutex mutex_;
    std::condition_variable condition_;
    bool stop_{false};

    void AsyncWorker();
    void EnqueueTask(std::function<void()> task);

public:
    ~SimuStream() override;
    Status Setup() override;

    Status DeviceToHost(void* device, void* host, size_t size) override;
    Status DeviceToHost(void* device[], void* host[], size_t size, size_t number) override;
    Status DeviceToHost(void* device[], void* host, size_t size, size_t number) override;
    Status DeviceToHostAsync(void* device, void* host, size_t size) override;
    Status DeviceToHostAsync(void* device[], void* host[], size_t size, size_t number) override;
    Status DeviceToHostAsync(void* device[], void* host, size_t size, size_t number) override;

    Status HostToDevice(void* host, void* device, size_t size) override;
    Status HostToDevice(void* host[], void* device[], size_t size, size_t number) override;
    Status HostToDevice(void* host, void* device[], size_t size, size_t number) override;
    Status HostToDeviceAsync(void* host, void* device, size_t size) override;
    Status HostToDeviceAsync(void* host[], void* device[], size_t size, size_t number) override;
    Status HostToDeviceAsync(void* host, void* device[], size_t size, size_t number) override;

    Status AppendCallback(std::function<void(bool)> cb) override;
    Status Synchronized() override;
};

} // namespace UC::Trans

#endif
